John Deere 6600 Combine Parts
The John Deere 6600 combine, manufactured from 1972 to 1978, was a popular and reliable workhorse for many farmers. Powered by a robust John Deere diesel engine producing around 105 horsepower, it offered header widths up to 20 feet, making it suitable for various field sizes. Its conventional separator design provided efficient threshing and separation, establishing the 6600 as a valued machine in grain harvesting.
The John Deere 6600 combine was introduced in 1972 and remained in production until 1978. It was designed as a versatile and dependable combine for small to medium-sized farms. The 6600 is powered by a John Deere 404 cubic inch (6.6L) diesel engine, producing approximately 105 horsepower. Its conventional threshing system features a 40-inch wide cylinder and walkers for grain separation. The grain tank capacity is around 85 bushels. The unloading auger is a standard speed auger which unloaded at around 30-40 bu/min. Available header widths ranged from 13 to 20 feet, accommodating different crop and field conditions. Optional equipment included straw chopper and spreader attachments to manage residue. The cab offered basic controls and visibility for operator comfort. The 6600 was well-regarded for its ability to efficiently harvest wheat, soybeans, and corn in various field conditions.
Specifications
| Engine | John Deere 404 CID 105 HP Diesel |
|---|---|
| Separator Type | Conventional - 40-inch Cylinder |
| Grain Tank | 85 bushels |
| Unloading Rate | 30-40 bu/min |
| Header Widths | 13-20 ft |
| Fuel Capacity | 55 gallons |
| Weight | Approx. 13,000 lbs |
| Years Produced | 1972-1978 |
Maintenance Tips
- Concave Adjustment: Regularly check and adjust the concave clearance to ensure proper threshing and minimize grain damage. Consult the operator's manual for recommended settings based on the crop being harvested.
- Belt and Chain Tension: Inspect all belts and chains for wear and proper tension. Loose or worn belts/chains can cause slippage, reduced performance, and potential damage.
- Sieve and Chaffer Cleaning: Clean the sieves and chaffer regularly to prevent buildup of debris, which can reduce cleaning efficiency and increase grain loss.
- Bearing Greasing: Lubricate all bearings according to the manufacturer's recommendations. Proper lubrication extends bearing life and prevents premature failure. Pay close attention to header bearings, as these are often exposed to dust and moisture.
History & Background
The John Deere 6600 combine was introduced in 1972 as a successor to earlier models and aimed to provide a more efficient and reliable harvesting solution. It offered improvements in engine power and header width. The 6600's robust design and performance contributed to its popularity and cemented its place in the history of John Deere combines.
Frequently Asked Questions
What engine is in the John Deere 6600?
The John Deere 6600 is powered by a John Deere 404 cubic inch (6.6L) diesel engine, producing approximately 105 horsepower.
What is the grain tank capacity on a 6600?
The grain tank capacity on a John Deere 6600 is approximately 85 bushels, and the unloading rate is around 30-40 bushels per minute.
What type of separator does the 6600 have?
The John Deere 6600 utilizes a conventional separator system, featuring a 40-inch wide cylinder and walkers for grain separation.
What are common parts needed for the 6600?
Commonly needed parts for the John Deere 6600 include concaves, rasp bars, belts, chains, bearings, auger fingers, and sickle sections. These are wear parts that need periodic replacement to maintain optimal performance.

AH87542 - Spindle (LH)
SKU: AH87542
1 in stock

AH87540 - Spindle (RH)
SKU: AH87540
4 in stock

AH75397 - Cylinder End
SKU: AH75397
10 in stock

AH107802 - Spindle (LH)
SKU: AH107802
7 in stock

H99060 - Hydro Drive Coupler
SKU: H99060
19 in stock

H93884 - 11 Tooth Pinion Shaft
SKU: H93884
3 in stock

H91808 - Splined; Final Drive Coupling
SKU: H91808
49 in stock

H85887 - (Cast Iron) Brake Drum
SKU: H85887
20 in stock

H85871 - Transmission Brake Shaft
SKU: H85871
14 in stock

H85817 - 11 Tooth Pinion Shaft
SKU: H85817
15 in stock

H81605 - for Sunstrand Unit Hydro Motor Shaft
SKU: H81605
4 in stock

H76111 - Hydro Motor Stub Drive Shaft
SKU: H76111
28 in stock

H123630 - Axle Drive Shaft
SKU: H123630
8 in stock

H123629 - Axle Drive Shaft
SKU: H123629
14 in stock

H123619 - Axle Drive Shaft
SKU: H123619
7 in stock

H123613 - Axle Drive Shaft
SKU: H123613
43 in stock

H123612 - Axle Drive Shaft
SKU: H123612
6 in stock

H114203 - 10 Tooth Pinion Shaft
SKU: H114203
19 in stock

H106283 - Drive Coupler
SKU: H106283
84 in stock

AH65358 - Tapered Roller Bearing
SKU: AH65358
33 in stock

AH128391 - Pinion Seal Assy
SKU: AH128391
16 in stock

R28024 - Wedge Blocks on Tie Rod Bolts
SKU: R28024
90 in stock

U13639 - Durometer 90 (2/Pack) .118" Thick O-Ring; 1.475" ID X 1.711" OD
SKU: U13639
1626 in stock

U12331 - Durometer 75 (4/Pack) .139" Thickness O-Ring; 2.734" ID X 3.012" OD
SKU: U12331
376 in stock
